Measurement of Mass, Length, and Time
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Louisiana State University *
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Course
2108
Subject
Mechanical Engineering
Date
Dec 6, 2023
Type
docx
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4
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Date: 9/7/2023
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PHYS 2108 Section: 13
Lab Title: Measurement of Mass, Length, and Time
Lab Report 2 Prelab
(2 points)
Purpose
Taking the measurement of multiple items (mass, length, and time). Each
measurement has a specific unit along with the measurement. All the fundamental units
must be in metric system (MKS). Which leads to learning unit conversions for any
measurement.
Procedure
Measure the length and width of the tabletop. The length and width of the table will
be calculated for the area. The mass of a plastic object was found by a triple beam balance.
A digital caliper found the dimensions of the plastic object and the diameter and length of a
white metal cylinder. The mean and standard deviation was found with each item measured.
Each measurement has their corresponding unit (in metric units).
During Lab (Findings)
Analysis (15 points)
Please attach all data tables and calculations after this page.
Area of Table:
1.6720 m
2
Area:
(1.2184m)
(1.3730m) =
1.6720 m
2
Using Short Meterstick
Using Long Meterstick
Length (m)
Width (m)
Length (m)
Wifth (m)
A1
1.2115
1.3701
1.2170
1.3740
2
1.2242
1.3989
1.2190
1.3730
3
1.2235
1.3757
1.2190
1.3700
4
1.2289
1.3732
1.2180
1.3730
5
1.2272
1.3752
1.2190
1.3730
1.1549E-02
1.5166E-03
Plastic Object
Length (m)
Width (m)
Thickness (m)
Mass (kg)
1
0.05033
0.05074
0.02406
7.349E-02
2
0.05035
0.05089
0.02406
7.335E-02
3
0.05032
0.05085
0.02403
7.339E-02
4
0.05027
0.05086
0.02407
7.410E-02
5
0.05033
0.05087
0.02406
7.352E-02
Mean
0.05032
0.05084
0.02405
0.07357
StD
3.000E-05
5.891E-05
1.516E-05
3.044E-04
Volume: 6.155E-05 m
3
V= L*W*H
= (0.05032)(0.05084)(0.02405)
Weight: 7.210E-01
W = mg = (0.07357)(9.8)
Weight density: 11710
WD = m/v = 0.07357/6.155E-05
Cylinders
White Metal
Golden Metal
Diameter (m)
1.580E-02
1.574E-02
Length (m)
7.115E-02
5.019E-02
Mass (kg)
3.812E-02
8.309E-02
Volume (m
3
)
1.395E-05
9.766E-06
Weight (N)
3.736E-01
8.143E-01
Weight Density (N/m
3
)
26780
83380
Volume = (0.01580)
2
(0.07115)(pi/4)
Reflection (9 points)
1.
The measurement used to find the area of the tabletop was the values from the 2-
meter meterstick. I chose those values because the standard deviation of those values
was lower than the 1-meter meterstick values. The lowest standard deviation shows a
smaller range of data giving a more accurate measurement. A larger standard deviation
would have a larger range of data therefore, the measurements are less accurate.
2.
As more measurements are taken, the precision will improve. Each measurement
taken will likely not be the same as the previous measurement. Accuracy will be lost
because each measurement will be similar in value as the accurate value could be
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